package com.bite.book.interceptor;

import com.bite.book.constant.Constant;
import com.bite.book.model.Result;
import com.bite.book.model.UserInfo;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import jakarta.servlet.http.HttpSession;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import java.nio.charset.StandardCharsets;

@Component
@Slf4j
public class LoginInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        HttpSession session = request.getSession(false);
        if(!cheakUser(session)){
            response.setContentType("text/html;charset=utf-8");
            String msg = "用户未登录";
            response.setStatus(401);
            response.getOutputStream().write(msg.getBytes("UTF-8"));
            return false;
        }
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        log.info("postHandle.....");
    }

    private boolean cheakUser(HttpSession session){
        if(session == null){
            log.warn("用户未登录");
            return false;
        }
        UserInfo userInfo = (UserInfo) session.getAttribute(Constant.SESSION_USER_INFO);
        if(userInfo==null || userInfo.getId()<=0){
            log.warn("用户未登录");
            return false;
        }
        return true;
    }

//    @Override
//    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
//        HandlerInterceptor.super.afterCompletion(request, response, handler, ex);
//    }
}
